Improvement in stoves



UNITED STATES ULYssEs E. onoFUT, THoMAs J. cHAsE, AND HUMPHREY D.TIFFANY, oF

PATENT OFFICE..

NICHOLSON, PENNSYLVANIA.

IMPROVEMENT IN STOVES.

Specification forming part of Letters Patent No. 148,419, dated March10, 1874; application filed f January 24, 1874.

, declare the following to be a full and exact description of the same,reference being had to the accompanying drawings forming part of thisspecification, in which- Figures l and 2 are vertical sections taken onlines at right angles with each other; and Fig. 3 is a horizontalsection, showing the con struction of the fire-pot.

Similar letters of reference in the accompanying drawings denote thesame parts.

This invention relates to that class of heaters in which cold air istaken from beneath the stove and carried upward around it, said airbeing heated in its upward passage by contact with the stove, andconveyed by suitable means to other apartments. To this end ourinvention consists in constructing the walls of the fire-pot of verticaltubes, made tapering ends with a hot-airvchambcr, said air-chambersbeing provided with suitable connections for admitting air from thebottom, and conveying it away from the top after it has been heated byits passage through the tubes of the tire-pot.

In the drawings, A represents the fire-pot, composed of a circular rowvof vertical tubes, a., placed in close contact with each other, andbeing of uniform size for a portion of their length, and from thencetapering to the upper end, as shown. The tubes a do not extend entirelyaround the rire-pot, a'space, D, being left at the front of the stove,this space being lilled by a piece of corrugated iron. E represents thefeeding-door. B represents a cold air-chamber, at the bottom of thestove, sur rounding the ash-pit, and provided with vertical flues orpassages C, the latter extending downward through the tloor of theapartment in which thestove is contained. F represents the hot-airchamber, located at the top oil the stove, and communicating with thecoldair chamber through the vertical tubes c. It will be seen that coldair passing into the chamber B, through the ilues C, is caused to tlowupward through the tubes a, around the re-pot, and will naturally becomeheated in such passage, the tubes a being in close contact with theiire, and offering a large extent of heatingsurface to the air passingthrough. The heated air accumulating in the hot-air chamber F isconducted through a suitable flue, G,

to other apartments. The tapering portions of the tubes a are enclosedin a drum, H, which is separated from the hot-air chamber F by ahorizontal partition, I. A rim or iiange, J, projects inward from thelower end of the drum H, said rim inclosing the tubes a. The tubes avarein close contact with each other, and of uniform size below the rim J,this portion constituting the magazine or re pot proper. Should thisarrangement be continued the entire length of the tubes, it would benecessary to introduce a smoke-pipe through one or more of them. Bygiving them a tapering form, however, above the, rim J, wedgeshapedspaces K are created, through which spaces the products of combustionescape and pass out through an ordinary smoke pipe, K. y

The tapering construction of the cold-air flues a a also allows'theproductsof combustion to pass between the outer cylinder of the stoveland the air-pipes through the wedge-shaped spaces K K, thus thoroughlyheating the air in the tubes a a. And a further advantage of thetapering form of the upper part of the airpipes is gained, as thepassage of the air is retarded by contracting or tapering the tubes7thereby allowin g the air to become more highly heated thun in theordinary construction, by being longer acted upon by the products ofcombustion.

Te cla-i111 as our invention-- The combination of the cold-nir chamberB, having eo1duir lues G C und vertical tubes a` a. in close Contact,near their lower ends, to form the tire-pot A, seid tubes a a being`made tapering at their upper ends to retard the pas sage of the air inthem, and ufl-ord Wedgeshuped openings K K for the passage of theproducts of combustion, hot-air chamber F,

and drum II, the Whole being arranged, cou-

